Mobile Mechanic

About the role

The Field Mechanic is a critical role responsible for the high-level maintenance, diagnostic troubleshooting, and repair of mobile heavy machinery, and on-road assets. This position operates primarily in the field, traveling to various job sites to ensure maximum operational uptime and efficiency.

Responsibilities

• Perform skilled mechanical repairs on diesel-powered mobile equipment (loaders, haul trucks, pavers) including engine rebuilds, transmission repairs, and the removal/installation of major mechanical parts.
• Utilize cutting torches, welders (MIG/TIG/Stick), and grinders to perform field fabrication, structural repairs, and equipment modifications.
• Execute scheduled PM services and lubrication protocols according to manufacturer specifications and Martin Marietta’s Maintenance Module.
• Conduct oil sampling, filter changes, and pressure testing to identify potential failures before they occur.
• Maintain accurate electronic and paper documentation of all work performed, materials used, and equipment health status.
• Use diagnostic software and tools (CAT ET, scanners) to analyze engine performance and system faults on modern heavy equipment.
• Interpret technical manuals, blueprints, and hydraulic/electrical schematics to execute precise repairs.
• Participate in safety initiatives, including SLAM (Stop, Look, Analyze, Manage) and pre-shift safety inspections of work areas and equipment.
• Conduct mandatory OSHA pre-shift safety inspections of work areas and equipment.
• Strictly adhere to Lock-Out/Tag-Out (LOTO) procedures and all company safety initiatives (Guardian Angel Creed).
• Participate in the hazard recognition program by documenting near-misses and implementing safety improvements.
• Maintain a clean and organized service truck and work area to prevent hazards and ensure environmental compliance.
• Collaborate with Plant Managers and Superintendents to prioritize backlogs and minimize production downtime.
• Operate support equipment such as cranes, man-lifts, loaders, and haul trucks in a safe and efficient manner.
• Mentor and coach junior maintenance staff and plant operators on best practices for equipment care and minor repairs.

Qualifications

• Vocational training or relevant experience
• CDL Class A, preferred
• 1+ years of experience in Heavy Equipment Maintenance specifically with brands such as CAT, Komatsu, Volvo, or John Deere. Asphalt experience is preferred.
• Knowledge, Skills, And Abilities:
  • Mechanical analysis
  • Design tools
  • Mechanical controls
  • Mechanical diagrams and blueprints
  • Mechanical test equipment design
  • Mechanical theory
  • Heavy equipment operations (engines, electrical, hydraulic, mechanical pneumatic)
  • OSHA compliance and regulations
  • Troubleshooting
  • Detail oriented
  • Problem solving
  • Time management
  • Effective communicator (written and spoken)

Additional Details

Physical Requirements: Must be able to lift and carry up to 50 lbs. for equipment servicing and repair. Required to bend, stoop, climb, and reach. You must be able to maintain three points of contact when climbing on/off machinery or on ladders. Strong hand-eye-foot coordination is essential for operating hand/foot controls. You must have good depth perception with or without seeing aid for distances up to 150 feet. Working Conditions: All duties require outside assignments and require periods of work in all weather conditions, cold, wet, dry and dusty. Must be able to work in areas where noise levels are up to 85 dbs.

Pay

The hiring range for this position is $33 - $40 exclusive of benefits or bonuses (discretionary and non-discretionary). The offered base compensation will be determined based on factors such as geographic location, business need, market conditions, proficiencies, skills, education, and experience.

Benefits

At Martin Marietta, we offer a highly competitive benefits package, including:

• Medical
• Dental
• Vision
• Health Care Reimbursement Account
• Dependent Care Reimbursement Account
• Wellness Programs
• Employee Assistance Plan
• Paid Holidays and Vacation
• 401(k) with Company matching
• Pension
• Options: Employee Life Insurance, Spouse & Dependent Life Insurance, Business Travel Accident Insurance, Direct Deposit Payroll, Educational/Tuition Assistance Plan, College Scholarship Program – for dependent children, Matching Gift Program, New Auto Purchase Discount Plans

Equal Opportunity Employer

We are committed to providing an environment of mutual respect where equal employment opportunities are available to all qualified applicants and teammates. We celebrate diversity and commit that qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.